You have the original orange balance leads?
Negative
The LCD connects with 6 wires to bms board. If you can solder, I have adaptors to rj45 cat 5 cables. Else just splice wires to extend them.
The adapters seem like the best plan of action, in case a cable goes bad it an off the shelf fix. I can and have no problems with soldering.
Bms comes with 1 meter leads. They can be spliced to the orange wires by cutting the plug off.
It looks like a lot of what you are suggesting was what was done in this thread?
If so I’ll read up on it so I knwo what I am geting myself into.